tree a4394e46ac6f27ed06e1646e3cf6fed44633b85c
parent e12d98aacf23eea64cb9119b496de32828fd39b3
author jeremy.zhang <zhangjun_inspur@163.com> 1511230449 +0800
committer Jeremy Zhang <zhangjun_inspur@163.com> 1511966249 +0000

Refactor volume groups and group snapshots tests

According to api microversion history of Cinder[1], min microversion for
volume groups (create/delete/update/list/show) is 3.13, min microversion
for group snapshots(create/delete/list/show) and create group from group
or group snapshot is 3.14.

While in GroupsTest in Tempest, the min microversion for volume groups is
set to 3.14. This patch aims to refactor the original GroupsTest to correct
the min microversion for volume groups, and also spilt it into two parts,
one for groups tests and the other for group snapshot tests, which will make
the code more clear and readable.

[1] https://docs.openstack.org/cinder/latest/contributor/api_microversion_history.html

Change-Id: Ic98e8892c4a44850d7a7afac9be1aa59ab38bb8c